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PIER PIER B PIER C PIER M PIER Letters
2009-08-04
A Bidirectional Multiband Antenna with Modified Fractal Slot Fed by CPW
By
Chatree Mahatthanajatuphat,

    Prof. Chatree Mahatthanajatuphat

    Electrical Engineering

    King Mongkut's University of Technology North Bangkok

    Thailand

    Homepage

Prayoot Akkaraekthalin,

    Professor Prayoot Akkaraekthalin

    Electrical Engineering Department

    King Mongkut's Institute of Technology North Bangkok

    Thailand

    Homepage

Somchai Saleekaw,

    Mr. Somchai Saleekaw

    Faculty of Engineering

    King Mongkut's University of Technology North Bangkok

    Thailand

    Homepage

Monai Krairiksh

    Prof. Monai Krairiksh

    Faculty of Engineering

    King Mongkut's Institute of Technology Ladkrabang

    Thailand

    Homepage

Progress In Electromagnetics Research, Vol. 95, 59-72, 2009
doi:10.2528/PIER09061603
Abstract
This paper presents a multiband slot antenna with modifying fractal geometry fed by coplanar waveguide (CPW) transmission line. The presented antenna has been designed by modifying an inner fractal patch of the antenna to operate at multiple resonant frequencies, which effectively supports the digital communication system (DCS 1.71-1.88 GHz), worldwide interoperability for microwave access (WiMAX 3.30 - 3.80 GHz), IMT advanced system or forth generation mobile communication system (3.40-4.2 GHz), and wireless local area network (WLAN 5.15 - 5.35 GHz). Manifestly, it has been found that the radiation patterns of the presented antenna are still similarly to the bidirectional radiation pattern at all operating frequencies. The properties of the antennas, for instance, return losses, radiation patterns and gain are determined via numerical simulation and measurement.
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Citation
Chatree Mahatthanajatuphat, Prayoot Akkaraekthalin, Somchai Saleekaw, and Monai Krairiksh, "A Bidirectional Multiband Antenna with Modified Fractal Slot Fed by CPW," Progress In Electromagnetics Research, Vol. 95, 59-72, 2009.
doi:10.2528/PIER09061603
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